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JW Marriott San Francisco Union Square

515 Mason Street  San Francisco  California  94102  USA 

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(proof of eligibility required at check-in)

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To make reservations by phone, dial freephone 0800 221 222 in the UK, 1 800 409 929 in Ireland, or view our regional telephone reservation numbers.

Explore the City by the Bay from our San Francisco hotel

Discover the JW lifestyle at JW Marriott San Francisco Union Square. Distinguished among hotels in Union Square, our luxurious guest rooms provide the comforts of home with the world-class amenities you expect. From lush pillow-top mattresses, ergonomic Herman Miller Aeron chairs and available 24-hour personal butler service, we pride ourselves on exuding the sophistication and elegance of our City by the Bay. No detail was forgotten in the stunning style of our luxury hotel in Union Square, from the state-of-the-art fitness center to the culinary creations showcased at Level Three Restaurant and Bar. We also boast over 13,000 square feet of event space, ideal for social events, weddings and business meetings. With a team of dedicated caterers, event planners and housekeepers, our San Francisco, CA, hotel is devoted to providing exceptional service from the moment of arrival to final goodbye. So whether traveling for business or leisure, you deserve to stay at the best hotel in Union Square, San Francisco.

Key Amenities

  • Fitness center
  • Pet friendly
  • Meeting/event space

Map & Local Area

Marriott Rewards

Category:9· Points Needed Per Night


  • Our Union Square San Francisco hotel is conveniently located near Moscone Convention Center, Chinatown and The Financial District.
  • Discover JW Marriott, featuring spacious guest rooms with pillow-top mattresses, ergonomic Herman Miller Aeron chairs and luxurious amenities.
  • Available 24-hour butler service and a world-class staff distinguishes us from other luxury hotels in San Francisco.

Explore Our Pacific Conference Center

Explore beyond the boardroom and experience the new Pacific Conference Center.

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Guest Rooms

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